RIVER GAUGE · NORTH FORK BIG LOST RIVER
North Fork Big Lost River at Wild Horse
Custer County, Idaho
Water level1.46 ft
Flow26 cfs
Last readingSep 16, 2026, 4:15 PM UTC (last recorded)
Action4.75 ft968 cfs
Minor flood5.11 ft1,187 cfs
The past week
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What floods at each level
- 5.11 ft
Homes along the East Fork of the Big Lost River from Wildhorse Creek to Star Hope Creek may see flooding along with lowland flooding from the confluence of Big Lost River North Fork upsteram of the East Fork of Big Lost River to the Copper Basin Airstrip.
- 4.75 ft
Near bankfull from confluence of Big Lost River North Fork upstream of the East Fork of Big Lost River to the Copper Basin Airstrip.
Highest crests on record
| Date | Level | Flow |
|---|---|---|
| May 20, 2006 | 6.41 ft | 2,170 cfs |
| Jun 11, 1965 | 6.39 ft | 1,420 cfs |
| May 24, 1967 | 6.23 ft | 1,380 cfs |
More on North Fork Big Lost River
DownstreamBig Lost River at Howell Ranch
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